Enough already!

You might be more likely to have a postterm pregnancy if:

• This is your first pregnancy
• You've had a prior overdue pregnancy
• Your baby is a boy
• You have a body mass index of 30 or higher (obesity)
• Your due date was calculated incorrectly, possibly due to confusion over the exact date of the start of your last menstrual period or if your due date was based on a late second- or third-trimester ultrasound.

Rarely, an overdue pregnancy might be related to problems with the placenta or the baby.

Whatever the cause, you're probably tired of being pregnant, not to mention anxious. Rest assured, an overdue pregnancy won't last forever. Labor could begin at any time.